Changed: : Small audio performance update - mostly for dedicated servers.

更改：音频性能提升，主要是服务器上。

youdao

Heterogeneous batching can potentially improve the performance on INSERT, UPDATE and DELETE statements that operate on multiple tables.

异构批处理能够潜在地提高在多个表上对语句进行INSERT、UPDATE和DELETE操作时的性能。

youdao

Manually creating an index is not recommended because the history table is frequently updated and the index could hurt update performance.

并不推荐您手动创建一个索引，因为历史表格会频繁更新，而索引可能会损害更新的性能。

youdao

Maybe Apple made some performance tweaks this update.

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